陕西省地震动衰减及台站场地响应研究  

ATTENUATION OF GROUND MOTION AND SITE RESPONSE IN SHAANXI PROVINCE

作　　者：赵韬[1] 李少睿[1] 王莹[2] 吴芳[1] 

机构地区：[1]陕西省地震局,陕西西安710068 [2]云南大学地球物理系,云南昆明650091

出　　处：《高原地震》2011年第4期24-30,共7页Plateau Earthquake Research

基　　金：陕西省地震局青年科研基金(2010-4)资助

摘　　要：利用陕西省测震台网的25个台站和2008—2010年所记录到的19个地震进行了陕西省Q值及台站场地响应值的计算,得出非弹性衰减Q值随频率f的关系为Q(f)=826.57f 0.3538。这说明陕西省处于高Q值区域,地壳相对较稳定,地震活动性相对较弱。计算得到的陕西省数字测震台网25个台站的场地响应值,其中,只有铜川台(2～8 Hz)、绥德台(12～17 Hz)及华县台(6～20 Hz)表现出明显的放大作用。Based on 25 stations of Shaanxi seismic network and 19 earthquakes recorded between 2008 and 2010, Q -value and site response values of each seismic station are calculated. The results show that the relationship between frequency f and inelastic attenuation Q -value is Q （f） = 826.57f0.353 8, which indicates that the province is a high Q - value area with a relatively stable crust and weak seismic activity. Most of the site response values of the 25 stations exhibit no significant amplification effect except that of Tongchuan station in 2 -8 Hz, Suide station in 12 - 17 Hz, and Huaxian Station in 6 -20 Hz.

关 键 词：Q值 场地响应 衰减 地震活动性 

分 类 号：P315.5[天文地球—地震学]